Tempi investigator cites aromatic hydrocarbons as fireball cause; bioreactor legality confirmed

Greek judicial investigator Karystianou attributes the Tempi train disaster fireball to aromatic hydrocarbons, specifically xylol, and states the bioreactor machine was legally checked the day before. This is a development in the ongoing judicial investigation into the 2023 Tempi rail crash, which has been a major political and social issue in Greece. The claim is partially confirmed as it reflects the investigator's statements, but the full forensic evidence remains under review.